[sage-support] Re: problem of using surf in SAGE online server 2

2008-09-20 Thread mabshoff



On Sep 20, 11:37 am, pong [EMAIL PROTECTED] wrote:

Hi Pong,

 I tried the example

 sage: s = singular.eval
 sage: s('LIB surf.lib;')
       ...
 sage: s(ring rr0 = 0,(x1,x2),dp;)
       ...
 sage: s(ideal I = x1^3 - x2^2;)
       ''
 sage: s(plot(I);)

 inhttp://www.dms.umontreal.ca/~math/logiciels/Sage/const/node18.html#ch:AG

 Looks like surf has been loaded and everything is fine but at the end
 I got:

 Traceback (click to the left for traceback)
 ...
    skipping text from `;` error at token `)`

 Any help?

IIRC surf does depend on some Java binary code shipped with Singular
and we have removed it. I am also pretty sure surf is broken when used
via the notebook server.

Cheers,

Michael
--~--~-~--~~~---~--~~
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at 
http://groups.google.com/group/sage-support
URLs: http://www.sagemath.org
-~--~~~~--~~--~--~---



[sage-support] Re: problem of using surf in SAGE online server 2

2008-09-20 Thread pong


Thanks for the reply. If I want plot an algebraic curve using
SAGE, what should I do then? Any suggestion?

Pong

On Sep 20, 1:58 pm, mabshoff [EMAIL PROTECTED]
dortmund.de wrote:
 On Sep 20, 11:37 am, pong [EMAIL PROTECTED] wrote:

 Hi Pong,



  I tried the example

  sage: s = singular.eval
  sage: s('LIB surf.lib;')
        ...
  sage: s(ring rr0 = 0,(x1,x2),dp;)
        ...
  sage: s(ideal I = x1^3 - x2^2;)
        ''
  sage: s(plot(I);)

  inhttp://www.dms.umontreal.ca/~math/logiciels/Sage/const/node18.html#ch:AG

  Looks like surf has been loaded and everything is fine but at the end
  I got:

  Traceback (click to the left for traceback)
  ...
     skipping text from `;` error at token `)`

  Any help?

 IIRC surf does depend on some Java binary code shipped with Singular
 and we have removed it. I am also pretty sure surf is broken when used
 via the notebook server.

 Cheers,

 Michael
--~--~-~--~~~---~--~~
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at 
http://groups.google.com/group/sage-support
URLs: http://www.sagemath.org
-~--~~~~--~~--~--~---



[sage-support] Re: problem of using surf in SAGE online server 2

2008-09-20 Thread Mike Hansen

Hello,

On Sat, Sep 20, 2008 at 3:47 PM, pong [EMAIL PROTECTED] wrote:


Thanks for the reply. If I want plot an algebraic curve using
 SAGE, what should I do then? Any suggestion?

For the above example, I would do something like:

sage: var('x1,x2')
(x1, x2)
sage: implicit_plot(x1^3 - x2^2,(x1,-2,2), (x2,-2,2), plot_points=200)

--Mike

--~--~-~--~~~---~--~~
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at 
http://groups.google.com/group/sage-support
URLs: http://www.sagemath.org
-~--~~~~--~~--~--~---



[sage-support] Re: problem of using surf in SAGE online server 2

2008-09-20 Thread pong


Hi Mike,

It works for my case. Thanks!

Pong

On Sep 20, 4:02 pm, Mike Hansen [EMAIL PROTECTED] wrote:
 Hello,

 On Sat, Sep 20, 2008 at 3:47 PM, pong [EMAIL PROTECTED] wrote:

     Thanks for the reply. If I want plot an algebraic curve using
  SAGE, what should I do then? Any suggestion?

 For the above example, I would do something like:

 sage: var('x1,x2')
 (x1, x2)
 sage: implicit_plot(x1^3 - x2^2,(x1,-2,2), (x2,-2,2), plot_points=200)

 --Mike
--~--~-~--~~~---~--~~
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at 
http://groups.google.com/group/sage-support
URLs: http://www.sagemath.org
-~--~~~~--~~--~--~---